Gas bag restraining system assembly

Abstract

A gas bag assembly in a gas bag restraining system has four elongated bars (2,4,6,8) of identical profile material which each have along their length a first (34) and a second groove (18) with a generally hollow cross-section, and a quadrangular base plate (10) which is provided with openings (14) for receiving at least one gas generator (20) and which has three edges (52,54,56) each engaged in the first groove (34) of one of said elongated bars (2,4,6,8) and a fourth edge (30) secured to another one of said bars. The gas bag (44) has an inlet opening (46) bordered by four tubular sections (42) shaped for accommodation in the second groove (18) of one of said elongated bars. A rod (40) is inserted into each of the tubular sections (42) for retaining the tubular section in the second groove (18) of the respective elongated bar.

We claim: 
     
       1. A gas bag assembly in a gas bag restraining system having at least one gas bag and one gas generator, having four elongated bars of identical profile material which each have along their length a first and a second groove with a generally hollow cross-section,   a quadrangular base plate which is provided with openings for receiving at least one gas generator and which has three edges each engaged in the first groove of one of said elongated bars and a fourth edge secured to another one of said bars, said gas bag having an inlet opening bordered by four tubular sections shaped for accommodation in the second groove of one of said elongated bars, and   four rods which are inserted into a respective one of the tubular sections for retaining said tubular section in the second groove of the respective elongated bar.   
     
     
       2. The assembly according to claim 1, wherein each bar comprises a third groove and wherein the third grooves of two opposed bars are each formed for insertion of an edge of a vehicle mounting lug. 
     
     
       3. The assembly according to claim 2 comprising a gas bag cover provided with a pair of mounting strips along two opposed edges, said mounting strips being inserted into the third grooves of two opposed elongated bars. 
     
     
       4. The assembly according to claim 3, wherein each of said mounting strips is formed by bending over an edge of the gas bag cover. 
     
     
       5. The assembly according to claim 2, wherein said vehicle mounting lugs are bent over on one side for fitting engagement in the third groove. 
     
     
       6. The assembly according to claim 1, wherein said bars are mitred and form a closed frame around the base plate. 
     
     
       7. The assembly according to claim 1, wherein the base plate is made of a material, and said edges of the base plate are formed by bending over the base plate material.